Preferences¶
The Preferences option is found within the Edit menu and also in the File menu of the Curve-Fit Graph. This option is used to set a few global preferences that cannot be automatically set from within the various procedures. Most preferences are saved automatically as each procedure is used and customized.
Numeric Precision in Graph Titles¶
The Graph Title Numeric Precision controls the number of significant figures used in the fit statistic and coefficient titles of the graph. You should use this option to control the number of significant figures in the coefficient and goodness of fit statistics appearing in titles rather than attempting to directly edit the titles using the Custom Titles option. Unless you alter the initial characters when modifying these titles, they will be automatically updated for the current equation using this precision preference each time the graph is redrawn.
Numeric Text Display¶
The Right Fill Numeric Values option appends zeros to numeric values if necessary to achieve a specified target length. Otherwise numeric values are truncated at this zero threshold. When checked, the value 19.1 would appear in a table as 19.1000000.
Format for Non-Linear Equations¶
The Notational Format for Non-Linear Equations option offers a compact notational form instead of the full mathematical equation expression for TableCurve's non-linear equations.
Use Bitmaps when Rendering Graphs¶
The Use Bitmaps when Rendering Graphs option specifies that graphs should be first rendered to bitmaps for a smooth rendering to screen. Using bitmaps is recommended, since it represents an aesthetic improvement when stepping through candidate equations. With some video hardware and drivers, however, drawing directly to screen may be slightly faster.
Text Window Type¶
The Rich Text Format Windows option uses RTF-type windows for text display. These windows offer the means to select and copy portions of the overall text, but are considerably slower than TableCurve 2D's standard text windows. For windows whose contents vary based upon the size of a data set, RTF windows are available only for data sets having 128 or fewer points. Data tables larger than 128 points will be displayed using standard text windows regardless of this setting.
Derivative Type¶
The Analytic Curve-Fit Equation Derivatives option specifies that analytic rather than numeric derivatives be used for all derivative computations involving built-in curve-fit equations. These are used for Curve-Fit graphs which contain derivatives on the Y2 axis, for the computations of derivative minima and maxima that appear in the Numeric Summary, and for the derivative values that appear in Excel, Lotus, SigmaPlot export and in the Review's Copy option.
In most instances, analytic derivatives are faster. An analytic derivative is also computed to full machine precision (19 significant figures). An analytic derivative computes the actual formula for the first or second derivative.
Typically, a numeric derivative is slower since multiple computations of the function are used to estimate the first or second derivative. A numeric derivative is typically accurate to 8 or more decimal places for a first derivative and to 5 or more decimal places for a second derivative.
Paper Size¶
Check the Use A4 as Default Paper Size option if you will be using A4 rather than 8.5 x 11 paper in your printer. This option applies to all MS Word and RTF file export, including the reports generated using the automation facility.